Hi TheLongBuild;
Thank you so much for your comment.
It is tooo much understandable and natural for you to have a curious impression on my water cooling system for my Snowberry. EVEN I am suspicious of the system about an absolute necessity.
On the contrary, it is a fact that the ship became warm on the water tank even at slow run in the bathtub test for a minute or so. If this ship should run in the mid-summer,the 540 class motor and water tank might get warm or hot...
Anyhow,I think it's better to have it than not.I regard this system as this level.
Moreover,I added this water cooling to expect and simulate scale realism rather than actual effect to cool the motor as I had mentioned before.
Moreover,this small ship is a bit large for a motor,an ESC, a receiver,a steering servo,a battery to look lonely in the hull.
And she therefore has still a lot of buoyancy for which I have to load more gears to get an adequate water line not by lead ballast,but by some meaningful gears to get them actually work in the hull.